Improvement in tinners  furnaces



wlLLlAM H. H. cooN.

Improvement in Tinners Furnaces.

N0. 128,122; v n PatentedJune18,1872`.

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VVILLIABLH. H. COON, OF ST. PAUL, llIINNESO'lA..l

IMPROVEMENT IN TmNERstuRNAcEs.

Specification forming part of Letters Patent No. 128,122, dated .lune 18, 187

To all whom yit may concern:

Be it known that I, WM. H. H. COON, of St. P aul, in the county of Ramsey and State of Minnesota, have invented certain new and useful Improvements in Tinners Furnaces; and do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanyingdrawing making a part of this specification, in which- Figure 1 is a side elevation of my improved device. Fig. 2 is a plan viewof the upper side of the same. Fig. 3 is a vertical central section of said device on line x a: of Figs. 1 and 2; and Fig. 4 is a horizontal section of the same on line z z of Figs. 1 and 3.

Letters of like name and kind refer to like parts in each of the figures.

My invention is an improvement upon a class of devices employed for the purpose of heating the soldering-irons of tinners and other workers in sheet metal; and it consists in the device as a whole, substantially as and for the purpose hereinafter specified.

In the annexed drawing, A represents a straight cylinder of sheet metal resting upon and secured to a hollow rectangular base, B, and inclosned at its upper end by means of a cover, A. Within the upper side of the base B, and within the cylinder A, is provided an opening which has a diameter slightly less than the diameter of said cylinder, so as to leave immediately inside of the wall of the latter a ledge, b, upon which rests a circular metal plate, E, provided with a series of openings, c. Attached to one side of said plate .E (which forms a supportinggrate for the fuel) is a strip of metal, c', which extends horizontally outward through a corresponding opening in the wall of said cylinder, and furnishes a means whereby said grate maybe moved to and fro in a horizontal plane, so as to shake the ashes from the fuel. Extending horizontally rearward, and thence vertically upward from the base B, is a pipe, G, which is connected with the cylinder A, near its upper end, by means of a short horizontal pipe, D. A circular metal disk, c', is pivoted to or upon one side of the pipe C, and, swinging horizontally and edgewise inward through or into a corresponding slot, c, formed within said pipe, furnishes a means wh ereby the passa ge through the latter may be partially or entirely closed,

as may be desired. A second damper, d', constructed like 'that hereinbefore described1 is pivoted to and works vertically within a slot, d, provided within the walls of the cross-pipe D, and enables the passage in and through the same to be diminished or closed at will. Secured to or upon the front side of the cylinder A, ata point slightly above the base B, is a hearth, G, which extends outward and slightly upward,and is provided with vertical sides g. A cover, G', corresponding in sizev and shape to the upper side and front end of the hearth, is hinged to or upon said end, so as to be capable of being turned upward and rearward (as seen in Fig. 1) so as to close said hearth, orl of being turned outward and downward (as shown by the dotted lines) so as to leave vsaid hearth entirely open and unobstructed.

The usual openings for the passage of soldering-irons being provided in and through the wall of the cylinder, at and within the rear end of the hearth, and a suitable ash-drawer, F, provided within the base, the device is complete, and is operated as follows:

' Fuel being applied to the cylinder and ignited, the cover G and damper c are closed and the damper d and ash-drawer opened. The air now enters beneath the grate, passes upward through the burning fuel, while-the heated escaping gases pass into and through the cross-pipe D. After the fuel is thoroughly ignited the damper d should be closed, the damper c opened, the ash-drawer closed, and air admitted to the upper side of the fuel, when the draught will be downward through said fuel into the ash-pit, and from thence into and through the rear pipe or iue C, by which means the gases given oi" from the fuel will be carried through the incandescent coal and thoroughly consumed, so as to not only afford a large increase in the quantity of heat, but

also to bring said heat to the most desirable' point. The advantage possessed by the extra damper within the back pipe is that it enables said pipe to be entirely closed and the g Q lesdag draught to be wholly directediuto and through A tiuuers furnace, in which the dampers c the cross-pipe,whi1e ordinarilybutone damper and d and the hinged cover G are combined is employed and the back pipe never closed, with the other portions of the device, subso that a, large proportion ofthe draughtpasses stantially as and for the purpose specified.

` up the lutter, `even when said cross-pipe is WM. H. H. OOON.

open. Witnesses:

Having thus fully set forth the nature and G. L. GRANT,

merits of my invention, what I claim is W. P. WARNER. 

